Power Brake Unit Push Rod
- Install adjusting gauge on master cylinder with master cylinder gasket in place. Lower adjusting gauge pin until pin slightly touches master cylinder piston. Perform STEP 1. See Fig 1. Turn adjusting gauge upside down and install on power brake unit.
- Measure clearance between power brake unit push rod and adjusting gauge pin head. Measured clearance should be zero on all models except Sienna. On Sienna, clearance should be .014" (.35 mm). Perform STEP 2. See Fig 1. If clearance is not as specified, adjust brake booster push rod length until push rod lightly touches adjusting gauge pin head.
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